According to the report, which cites "people familiar with the product," the S4 will boast a 5-inch screen, a quad-core processor and 13-megapixel camera.

Perhaps the most interesting feature is eye scrolling. However, whether it does end up on the S4 remains unclear. Earlier this month, the New York Times reported eye tracking for reading articles would be available. But sources cited by Bloomberg claim it will involve simpler users such as videos that pause when the user looks away.

Samsung's Galaxy S series of smartphones have surged in popularity, most notably last year's Galaxy S3. The company sold 30 million worldwide in its first five months.